23385621 has 32 divisors (see below), whose sum is σ = 36949248. Its totient is φ = 12879360.

The previous prime is 23385601. The next prime is 23385643. The reversal of 23385621 is 12658332.

It is not a de Polignac number, because 23385621 - 2¹⁰ = 23384597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23385601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135091 + ... + 135263.

It is an arithmetic number, because the mean of its divisors is an integer number (1154664).

Almost surely, 2^23385621 is an apocalyptic number.

23385621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23385621 is a deficient number, since it is larger than the sum of its proper divisors (13563627).

23385621 is a wasteful number, since it uses less digits than its factorization.

23385621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its digits is 8640, while the sum is 30.

The square root of 23385621 is about 4835.8681743819. The cubic root of 23385621 is about 285.9672521880.

The spelling of 23385621 in words is "twenty-three million, three hundred eighty-five thousand, six hundred twenty-one".